13869918931 has 16 divisors (see below), whose sum is σ = 15326640000. Its totient is φ = 12446104320.

The previous prime is 13869918913. The next prime is 13869918961. The reversal of 13869918931 is 13981996831.

It is a cyclic number.

It is not a de Polignac number, because 13869918931 - 2²³ = 13861530323 is a prime.

It is a super-2 number, since 2×13869918931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13869918961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1134256 + ... + 1146418.

It is an arithmetic number, because the mean of its divisors is an integer number (957915000).

Almost surely, 2^13869918931 is an apocalyptic number.

13869918931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13869918931 is a deficient number, since it is larger than the sum of its proper divisors (1456721069).

13869918931 is a wasteful number, since it uses less digits than its factorization.

13869918931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13506.

The product of its digits is 2519424, while the sum is 58.

The spelling of 13869918931 in words is "thirteen billion, eight hundred sixty-nine million, nine hundred eighteen thousand, nine hundred thirty-one".